SCREENING AND EMPIRICAL KINETIC MODELS OF COLLAGEN EXTRACTION FROM SELECTED MALAYSIAN FRESHWATER FISH

摘要

Acid-soluble collagen (ASC) and pepsin-soluble collagen (PSC)were extracted fromnthe muscles of selected cultured catfish (hybrid of Clarias gariepinus x Clarias macrocephalus),nred tilapia (Oreochromis niloticus), black tilapia (Oreochromis mossambicus),npangasius catfish (Pangasius sutchi), sultan fish (Leptobarbus hoevenii) andnlabyrinth fish (Trichogaster trichopterus), freshwater fishes that are widely consumednin Malaysia. The extracted yields for the tested species were higher for PSC as comparednwith ASC. The catfish contained the highest amount of collagen (PSC) atn368.36 u0002 12.05 mg collagen/gmuscles.A mathematical description of the principlenkinetics involved in collagen extraction was attained using four two-parametricnmodels, namely the power law, parabolic diffusion, Peleg’s and Elovich’s models.nThe power law model was found to be the best model capable of predictingnthe extraction data with R2 = 0.993, P value = 0.033% and root mean squarendeviation = 2.605%, respectively.